When a new document is imported into OnBase, the OnBase HL7 module sends Fusion CAC a message containing a pointer to the new document. Fusion CAC stores the pointer and links it to the appropriate patient encounter, allowing the document to be retrieved from within Fusion CAC.
When a Fusion CAC user tries to view the OnBase document, Fusion CAC requests the document from the OnBase Application Server. The Application Server retrieves the latest revision of the document and sends it to Fusion CAC. Image documents are sent to Fusion CAC as individual page files from the requested page range. If a document is not an image, it is sent in its entirety as a single file. Once Fusion CAC receives the document, the Fusion CAC viewer displays the document to the user.
OnBase Workflow can notify Fusion CAC when documents are updated by sending HL7 messages. When a Fusion CAC user requests a document that has been updated, Fusion CAC requests a refreshed copy of the document from the OnBase Application Server.